Zach Mettenberger might have passed enough athletic tests to make it as a prospect in the NFL draft, but the LSU quarterback was one of more than 10 prospective players to fail his drug test at the NFL combine. 

The NFL combine is an annual event where the top college prospects show off their abilities in front of NFL general managers, scouts and coaches. Who's the fastest, who can lift the most, who has the highest vertical leap, and passing skills are put on display. According to multiple reports, the 2014 NFL combine had more than 10 players fail drug tests.

Some of the players mentioned are Timmy Jernigan, Anthony Johnson, Telvin Smith, Christian Jones, and most notably Mettenberger.

LSU quaterback Mettenberger is not projected to be a first round pick, but he is a good quarterback. Unfortunately for Mettenberger, this is not the only incident that will hurt his draft stock. In 2010, he pled guilty to two sexual battery charges. Usually the NFL combine sees about two or three failed drug tests, which has people asking the obvious question: "why would you not be clean when you're going to be tested anyway?"

Another big name that reportedly tested positive was Timmy Jernigan. Jernigan helped lead the Florida State Seminoles to the 2014 BCS National Championship and is projected to be a possible first round pick. Jernigan had 4.5 sacks and 63 tackles last season and now has many people wondering if those numbers were natural or if they were inflated thanks to performance enhancing drugs. Jerginan just did himself a huge disservice; his draft stock will pay for his mistakes.

According to Mettenberger's personal physician Jason Eliowitz, his sample was diluted due to battling dehydration. Eliowitz says that Mettenburger has been drinking more than a gallon per day to deal with dehydration, which resulted in a failed attempt.

No word yet if any of these players will take another test.

The NFL draft begins on Thursday night, so it will be interesting to see how these failed drug tests impact the draft. General managers and scouts put stock into every little detail on and off the field. Players like Aaron Hernandez and Randy Moss saw their draft stock fall after off-the-field problems in college. If NFL teams are going to invest millions of dollars and countless hours in these players, they have to be sure.

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